681results about "Fixed microstructural devices" patented technology

The invention relates to the technical field of high polymer materials and preparation thereof, and discloses a wet anti-slip bionic friction pad on a glass surface, which is inspired by a micro-nano structure of toe pads of organisms such as tree frogs and long-horned grasshoppers with wet friction increasing characteristics, and a bulge array is added on the surface of a high-friction material, so that the friction coefficient of the friction pad is increased; the microstructure arrays can discharge a water film on the surface of the friction pad under the capillary action in a wet environment, and the effective contact area between solids is increased, so that the friction pad and a friction surface are always kept in a dry friction state, and stable friction force is ensured. The friction pad comprises a connecting layer, a supporting layer and a tail end protruding straight column array, a tail end contact layer is in a hexagonal straight column shape, the diameter of an inscribed circle of a hexagonal micro-column structure ranges from 5 micrometers to 5000 micrometers, column bodies are densely arranged in a hexagonal mode, the height of the column bodies ranges from 10 micrometers to 1500 micrometers, the tail ends of the column bodies are planes, the interval between every two column bodies ranges from 2 micrometers to 600 micrometers, and tight drainage grooves are formed.

The invention provides a flexible palladium film hydrogen sensor and a preparation method thereof, the flexible palladium film hydrogen sensor is sequentially provided with a flexible substrate, a hydrogen sensitive sensing layer and a contact connection layer from bottom to top, and the contact connection layer is connected with a resistance measurement unit; and the hydrogen-sensitive sensing layer is a palladium or palladium alloy film with a conical micro-nano structure. The palladium or palladium alloy thin film with the conical micro-nano structure provides a hydrogen sensor conical surface micro-nano structure with a high specific surface area for the flexible palladium thin film hydrogen sensor, and the process that hydrogen is adsorbed, dissolved and diffused into the palladium or palladium alloy thin film is accelerated, so that the response speed of the sensor is increased; according to the hydrogen sensor, the flexible substrate is adopted, so that the hydrogen sensor can be conveniently arranged in various narrow spaces, and the applicability of the hydrogen sensor in various scenes is improved.

The invention relates to the technical field of micro-nano motors, in particular to a preparation method and application of a micro-nano motor for improving oil reservoir exploitation. Due to the wheel shape of the micro-nano motor and the hydrophobic modification effect, the micro-nano motor can move in a high-viscosity oil reservoir environment in oil reservoir exploitation. Under the action of a magnetic field, the micro-nano motor can controllably move in a complex three-dimensional core environment, and the size of the micro-nano motor can be reduced when the micro-nano motor encounters a narrower pore throat, so that the micro-nano motor can smoothly pass through the pore throat. When the micro-nano motor makes contact with crude oil drops, the micro-nano motor can carry the oil drops to move and carry the oil drops to a high-permeability area of the oil reservoir, and the motor carrying the oil drops is extracted to the ground along with displacement fluid, so that the recovery rate of the oil reservoir is increased. Meanwhile, the micro-nano motor can be recycled for multiple times.

A sensing structure and a method of fabricating a sensing structure for a compressive-type pressure sensor. The method comprises the steps of providing an elastic micropatterned substrate defining a plurality of 3-dimensional microstructures, each microstructure comprising a tip portion pointing away from the substrate in a first direction; forming a conductive film on the elastic micropatterned substrate such that the 3-dimensional microstructures are substantially covered by the conductive film; and forming cracks in the conductive film in areas on 3-dimensional microstructures.

The invention relates to the technical field of heat dissipation of semiconductor devices, in particular to a two-phase cold plate with three-stage porous heat dissipation and a processing method of the two-phase cold plate. The invention discloses a two-phase cold plate with three-stage porous heat dissipation, which comprises a substrate, and a micro-channel is arranged in the substrate. On one hand, flow distribution is regulated and controlled based on the micro-channel of topological optimization, and on the other hand, the surface liquid storage capacity during two-phase boiling is improved and the separation diameter of bubbles is regulated and controlled by machining the micron-sized blind holes in the inner bottom of the micro-channel; on the other hand, nanoscale blind holes are formed in the inner bottom and the inner wall of the micro-channel and in the micron-sized blind holes to improve the gasification core density and strengthen the liquid wicking performance; and the three are combined to form three-stage heat dissipation, so that the heat dissipation performance of the cold plate can be remarkably improved. The problems that an existing conventional two-phase cold plate is unreasonable in design, physical damage is prone to occurring, and the heat dissipation performance of the two-phase cold plate is affected are solved.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.

A microelectronic socket structure and a method of forming the same. The socket structure comprises: a socket structure housing defining a cavity therein; and an interconnection structure including: a contact element disposed at least in part within the cavity, and configured to be electrically coupled to a corresponding microelectronic package, the contact element corresponding to one of a signal contact element or a ground contact element; and a conductive structure disposed at least in part within the cavity, electrically coupled to the contact element, and having an outer contour that is non-conformal with respect to an outer contour of the contact element.

Cleaning device for cleaning surfaces, in which at least one MEMS steam generator (1) and at least one pulsation actuator (16) are provided and wherein the at least one MEMS steam generator (1) and the at least one pulsation actuator (16) are coupled and controllable in such a way that the bubbles generated by MEMS steam generator (1) are accelerated onto a surface to be cleaned by means of the pulsation actuator (16).

A method for producing a nanochannel (200) is described with the following steps a) depositing a nanochannel sacrificial layer (3) using an ALD process on a substrate (1), which defines the subsequent channel height at least at one point b) depositing a first covering layer (4) on the nanochannel sacrificial layer (3) c) At least partially structuring and / or etching the nanochannel sacrificial layer (3) and the first cover layer (4) so ​​that a first exposed region (10) is formed d) At least partial etching of the now exposed nanochannel sacrificial layer (3) with an etching rate < 100nm / min, preferably <10nm / min, and particularly preferably <5nm / min and even more preferably <2nm / min, so that an under-etched second exposed region (20) is formed which defines the channel width e) depositing a second cover layer (5) onto the first cover layer (4) and the first exposed region (10) so that the second exposed region (20) is sealed and forms a nanochannel (200).

The invention discloses a three-dimensional implantable flexible microprobe array substrate with an adjustable and controllable magnetic field and a preparation method of the three-dimensional implantable flexible microprobe array substrate. The preparation method comprises the following steps: sequentially preparing the sacrificial layer and the first flexible material layer on the supporting substrate from bottom to top; growing a magnetic material intermediate layer on the first flexible material layer; preparing a second flexible material layer on the magnetic material intermediate layer; the first flexible material layer and the second flexible material layer are etched through the photoetching technology to achieve hollowing of the microprobe area and thinning of the rotating hinge; and removing the sacrificial layer to release the whole microprobe array substrate, pulling the microprobe array to rotate through a magnetic field to complete the process of converting the microprobe array into the two-dimensional microprobe array into the three-dimensional microprobe array, and curing the hinge through resin to obtain the three-dimensional microprobe array. According to the invention, the performance and reliability of the probe array under the dynamic condition are obviously improved; according to the invention, the microprobe array can capture the change of a three-dimensional signal, provides a high-spatial-resolution monitoring capability, and is suitable for high-precision applications such as real-time neural activity monitoring and the like.

The invention relates to a microfluidic device (10) comprising a pneumatic layer (11), a fluidic layer (12), and a membrane (13) which is partially arranged between the pneumatic layer (11) and the fluidic layer (12), wherein at least one component (22) is arranged in one of the two layers (11, 12), in particular in the pneumatic layer (11). The component (22) is arranged in at least one guide rail (21).A method for manufacturing the microfluidic device (10) comprises manufacturing at least one guide rail (21) from a first material, arranging the at least one guide rail (21) and at least one component (22) in an injection molding tool, overmolding the guide rail (21) and the component (22) with a second material to obtain a layer (11, 12), in particular a pneumatic layer (11), and joining the layer (11, 12), in particular the pneumatic layer (11), with a membrane (12) and a second layer (12, 11), in particular a fluidic layer (13), to obtain the microfluidic device (10).

The invention relates to a magnetic sensor device comprising a substrate (10) and at least one sensor structure (A) with at least one sensing element (16a), which is arranged in a first sensing area (14a) located directly on or adjacent to a substrate surface (12), and by means of which a magnetic field component present in the first sensing area (14a) can be detected along a sensing axis (18a) assigned to each sensing axis and aligned parallel to the substrate surface (12), and a first layer (20a) comprising at least one soft magnetic material, which is located between the substrate (10) and the first sensing area (14a) located directly on or adjacent to the substrate surface (12) or on a side of the first sensing area (14a) facing away from the substrate (10).wherein a first outer surface (22a) of the first layer (20a) oriented towards the first sensing area (14a) has at least one partial surface (24a) which is oriented at a local angle of inclination greater than or equal to 2° and less than or equal to 70° to the substrate surface (12).

A system for determining the presence of a gas bubble in a blood sample. The system has a microfluidic chip comprising a plurality of interconnected microfluidic channels arranged in a vascular-like configuration to mimic a given part of a vascular system, with a first inlet for receiving the blood sample and a second inlet for injecting the gas into a flow of the fluid to create the gas bubble in the microfluidic channels. The system has a circulation system comprising a pump, a reservoir containing the blood sample and in communication with the pump, and a conduit in communication with the pump and / or the reservoir, the conduit directing the blood sample to the first inlet. The system also has an imaging system configured to capture images of the microfluidic channels of the microfluidic chip, and a detection system configured to determine the presence and location of the gas bubble.

The invention provides a microneedle mold manufacturing method, a microneedle manufacturing method, a microneedle mold and a microneedle, relates to the technical field of microneedles, and can improve the manufacturing efficiency of the microneedle mold. The method comprises the following steps: providing a glass substrate, wherein the surface of the glass substrate is provided with at least one target area; a laser beam is used for modifying the target area in the thickness direction of the glass substrate, so that an inverted-cone-shaped modified area is formed on the glass substrate; the modified area is subjected to etching treatment through etching liquid to form an inverted-cone-shaped hole, the microneedle mold is obtained, and the microneedle mold is used for manufacturing a microneedle.

The present invention discloses a two-dimensional MXene functionalized In x Ga 1‑x N nanorods and their preparation methods and applications. x Ga 1‑x The N nanocolumn includes a substrate, a MXene layer on the substrate, and an In x Ga 1‑x N nanorods; wherein 0≤x≤1. The present invention uses two-dimensional MXene as a substrate and In x Ga 1‑x The functional layer between the N nanopillars not only broadens the choice of substrates and reduces costs, but also effectively reduces the interface impedance between the substrate and the nanopillars, which is conducive to enhancing the carrier transport performance and greatly improving the photoelectric performance of the nanopillars. At the same time, it avoids the disadvantage that the nanopillars are easily etched on the substrate and improves their photoelectric stability. x Ga 1‑x N nanorods have important application prospects in photoelectrolytic water splitting to produce hydrogen, photodetectors, and solar cells.

The invention relates to a method for producing at least one micromirror element (200) as it can be used in micro-electro-mechanical systems (100), in particular for use in semiconductor technology equipment (1), and to a micro-electro-mechanical system (100) comprising corresponding micromirror elements (200). The process includes the following steps: - Providing a flat, two-sided mirror substrate (210); - Incorporating a predetermined shape at least on the side (215) of the provided mirror substrate (210) intended to be reflective; and - Applying a reflective coating (220) at least to the side (215) of the provided mirror substrate (210) intended to be reflective.

The present disclosure is drawn to inertial pumps. An inertial pump can include a microfluidic channel, a fluid actuator located in the microfluidic channel, and a check valve located in the microfluidic channel. The check valve can include a moveable valve element, a narrowed channel segment located upstream of the moveable valve element, and a blocking element formed in the microfluidic channel downstream of the moveable valve element. The narrowed channel segment can have a width less than a width of the moveable valve element so that the moveable valve element can block fluid flow through the check valve when the moveable valve element is positioned in the narrowed channel segment. The blocking element can be configured such that the blocking element constrains the moveable valve element within the check valve while also allowing fluid flow when the moveable valve element is positioned against the blocking element.

In a general aspect, antirelaxation coatings are disclosed for coating the interior surfaces of vapor cells. In certain aspects, a vapor cell includes a dielectric body having interior and exterior surfaces. The interior surface defines a cavity in the dielectric body, and the exterior surface defines an opening to the cavity. The vapor cell also includes an antirelaxation coating that is disposed on the interior surface of the dielectric body and includes an organosilane material. The vapor cell additionally includes a vapor or a source of vapor residing in the cavity as well as an optical window that covers the opening to the cavity. The optical window has a surface bonded to the exterior surface of the dielectric body to form a seal around the opening. The vapor or the source of vapor includes alkali metal atoms.

The invention discloses a surface plasmon resonance radiation cooling-heat conduction-liquid film evaporation coupling heat dissipation multi-layer co-construction micro-nano structure and a manufacturing method and application thereof, and belongs to the technical field of micro-nano manufacturing and functional structure surfaces, and the multi-layer co-construction micro-nano structure is composed of three layers of structures; the bottom layer structure is a substrate; the top of the bottom layer structure is a near-infrared wavelength scale grating structure; the middle-layer structure is a high-thermal-conductivity diamond film and covers and fills the bottom-layer structure; the top of the middle-layer structure is of a lyophilic micro-nano structure; the top layer structure is a silicon dioxide film. Radiation cooling, efficient heat conduction and liquid film evaporation / boiling phase change heat transfer are coupled, the heat transfer and heat dissipation level is greatly improved, additional external energy input is not needed, and positive significance is achieved for research and development of a novel high-performance and zero-energy-consumption radiator, promotion of development of a high-heat-flow-density advanced system and improvement of the ecological environment.

The invention provides a packaging front plate, a preparation method thereof and a photovoltaic module. The packaging front plate comprises a body which is of a transparent structure; the radiation cooling layer is arranged on the surface of one side of the body, the radiation cooling layer has light transmittance, and the face, away from the body, of the radiation cooling layer is provided with a lotus leaf surface imitating micro-nano structure. The radiation cooling layer can radiate heat to the external space, so that the working temperature of the photovoltaic module is effectively reduced, the photoelectric conversion efficiency can be improved, the photovoltaic module can be prevented from running at a high temperature, and the service life of the photovoltaic module can be prolonged; furthermore, a micro-nano structure imitating the lotus leaf surface is designed on the radiation cooling layer, attachment of water drops or dirt on the surface of the radiation cooling layer can be reduced, and therefore the surface of the radiation cooling layer is kept clean and dry, the problem that the power generation efficiency is reduced due to pollution can be avoided, the cleaning frequency can be reduced, and the power generation efficiency is improved. And therefore, the maintenance cost can be reduced.

In accordance with the present disclosure, an example non-transitory computer readable medium may store instructions that when executed cause a computing device to dispense, using a first fluid ejector of a microfluidic device, a biologic sample to a region of a substrate, dispense, using a second fluid ejector of the microfluidic device, a reagent to the region of the substrate, and dispense, using a third fluid ejector of the microfluidic device, a metabolic indicator to the region of the substrate, wherein the metabolic indicator provides a visual indication in response to reaction with the biologic sample.

The present invention relates to a Ti nanotube, a preparation method and use thereof. The preparation method of the Ti nanotube comprises the following steps: (1) depositing metal Ti on the surface of a carbon nanorod to obtain a Ti-plated carbon nanorod; (2) removing the carbon nanorods in the Ti-plated carbon nanorod to obtain a Ti nanotube. The preparation method of the present invention can well control the thickness of the deposited metal Ti, and the obtained Ti nanotube has good uniformity; at the same time, compared with the Ti nanotube prepared by the chemical vapor deposition method in the prior art, the length of the Ti nanotube obtained by the method of the present invention is controllable, the same as the length of the carbon nanorod, and far exceeds the length of the Ti nanotube prepared by the chemical vapor deposition method while ensuring the tubular structure. The preparation method of the present invention is simple, can be industrialized, and has excellent practical prospects.

In order to increase the efficiency with which an analysis using an enhanced electric field based on a microstructure is made, an embodiment of the present disclosure provides a plate-shaped sample liquid concentration device (10) that is to be used being placed over a microstructure substrate which has disposed on the surface thereof a microstructure capable of generating an enhanced electric field with respect to incident light. The sample liquid concentration device includes a first surface and a second surface that defines a thickness together with the first surface, and has formed therein a plurality of passage parts connecting the first surface and the second surface. The passage parts each have a first opening and a second opening formed respectively in the first surface and the second surface and are each defined by an inner surface connecting the first opening and the second opening. With the first surface disposed in proximity to the surface of the microstructure substrate, the first opening can be positioned corresponding to the position of the microstructure. The second opening can receive a sample liquid that contains a detection target object.

A microfluidic valve comprising an adhesive tape, an outlet disposed at one end of a first microfluidic channel, an inlet disposed at one end of a second microfluidic channel, wherein the inlet and the outlet are disposed in a proximity to each other, wherein the adhesive tape covers both the outlet and the inlet. A method of operating the microfluidic valve is also disclosed.

The present approach relates to a microfluidic device (100) for processing fluids. The microfluidic device (100) comprises a base element (110) with a recess (130) and a sealing film (140) arranged on one side of the base element (110) and covering the recess (130). The microfluidic device (100) also comprises at least one microfluidic receiving element (135) for carrying out a reaction in the microfluidic device (100). The microfluidic receiving element (135) is arranged directly on the sealing film (140) in the recess (130).

The disclosure relates to a method for producing a sequencing unit for sequencing a biochemical material. In this case, at least one sequencing pore for sequencing the biochemical material in a precursor layer is created in a thermal lithography process in order to produce a pre-structured layer. The pre-structured layer is then converted into a graphene layer by heating to a conversion temperature in order to produce the sequencing unit. The sequencing pore is reduced to a size suitable for sequencing, depending on the transformation temperature.

The present invention discloses a microfluidic bio-interconnected neural network chip and a preparation method thereof. The chip consists of a microelectrode array, a microfluidic structure, and a cell culture ring structure. The microelectrode array can detect and stimulate the activity of neurons; the microfluidic structure limits the growth direction of axons between cell culture partitions by setting cell culture partitions, microfluidic channel dimensions, microfluidic channel shapes, and fillet distribution, thereby achieving controllable low-power transmission of neuronal electrical information; the cell culture ring structure provides nutrients for cells in the cell culture chamber. The present invention provides a method for manufacturing a microfluidic bio-interconnected neural network chip, using fully exposed positive photoresist as a sacrificial layer for microfluidic structure peeling, thereby solving the problem of difficult demolding of thin-film microfluidic structures. The chip can be used to explore the response characteristics of neuronal networks to external stimuli, study the internal information transmission mode of neuronal networks, and other fields.